First raising your voice and getting pi*# off Is the worst thing you can do when you take your truck or car IN for repair. As you know you catch more bees with honey then vinejar. :-{} You got all to lose. Then adding those boxes on your truck Is a no no today. Make the shop your best buddy, I always give him a tip when I take my truck In for repairs. That the cheapest thing I can do to be treated as I want. I always shake his hand when I pick up my truck also. So far I have had no problems with service. :-laf